Mesoporous catalyst support based on tin oxide (SnO2) is synthesized with high surface area of 205 m2 g−1 and with narrow pore size distribution. Modified polyol method is used to deposit platinum on SnO2. The physical properties of the support and the SnO2-supported Pt catalyst (Pt/SnO2) are characterized by using the Brunauer, Emmett, and Teller method, X-ray diffraction, and transmission electron microscopy. The electrochemical stability and durability of the Pt/SnO2 catalyst are investigated by the accelerated stress tests proposed by the U.S. Department of Energy. Pt/SnO2 catalyst exhibits electrochemical activity in fuel cells comparable to that of Pt/C. More importantly, the electrochemical stability of the Pt/SnO2 catalyst significantly improves when compared with the commercial Pt/C catalyst at high potentials (~1.2 V vs reversible hydrogen electrode).
Journal of the Electrochemical Society, 2010, pages B1163-B1172.
© The Electrochemical Society, Inc. 2010. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in Journal of the Electrochemical Society.
Publisher's link: http://dx.doi.org/10.1149/1.3442371